Flow Topology of Symmetric Crossing Shock Wave Boundary Layer Interactions
Three-dimensional crossing-shock-wave and turbulent boundary-layer interactions can generate intense wall heat flux rates, high pressure levels, and large-scale flow separations on high-speed vehicle surfaces. To reproduce such complex flow physics, simple configurations, such as single-sharp fin and double-sharp fin mounted on a flat plate, were adopted in previous investigations. Review papers by Knight et al.  and Zheltovodov  provided summary of current state-of-the-art of research advancements in this field. Recently, Yao et al.  carried out numerical simulation of symmetric double fin configurations of 7°×7°, 11°×11°, and 15°×15° wedge angles. Results of surface static pressure distributions were found in good agreement with wind tunnel experiments  and other numerical simulations  but heat flux coefficient distribution differed from experimental data at the 15°×15° case. In this work, an additional configuration of 19°×19° case is introduced to investigate flow topology due to increased shock-viscous interaction strength. The predicted flow field will be compared qualitatively with available experiments [6, 7] and other relevant numerical studies [7, 8].
KeywordsTurbulent Boundary Layer Bottom Wall Wedge Angle Separation Line Shear Stress Transport
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